Rank	Countries/Territories	Count	Percent
1	United States	424	46.8%
2	China	191	21.1%
3	Germany	65	7.2%
4	Japan	48	5.3%
5	Hong Kong	18	2%
6	United Kingdom	18	2%
7	France	13	1.4%
8	Brazil	13	1.4%
9	Canada	8	0.9%
10	Romania	8	0.9%
11	Switzerland	8	0.9%
12	India	7	0.8%
13	Cyprus	7	0.8%
14	Singapore	7	0.8%
15	Spain	6	0.7%
16	Indonesia	6	0.7%
17	Russia	6	0.7%
18	Italy	6	0.7%
19	Mongolia	6	0.7%
20	Netherlands	4	0.4%
21	Malaysia	4	0.4%
22	Korea, Republic of	3	0.3%
23	Taiwan	3	0.3%
24	Iran, Islamic Republic of	3	0.3%
25	Argentina	3	0.3%
26	Australia	3	0.3%
27	Bulgaria	2	0.2%
28	Greece	2	0.2%
29	Jamaica	2	0.2%
30	Mauritius	2	0.2%
31	Viet Nam	2	0.2%
32	Tanzania, United Republic of	1	0.1%
33	Thailand	1	0.1%
34	Saudi Arabia	1	0.1%
35	Serbia	1	0.1%
36	Ireland	1	0.1%
37	Chile	1	0.1%
38	Austria	1	0.1%
39	Belgium	1	0.1%